No legal minimum that I'm aware of . Took our ' Boi ' in a C150 at 18mths . Pushed the mainwheel over his foot at 2 [ me more upset than him ] . He threw up regularly , and still does in SEPs . However he became an easyJet A319/320 co-pilot before his 21st , and loves it .
Labrador flying many years ago . Sat in the back of the C150 , his head on your shoulder ' monitoring ' .... '' Come on boys keep her on the C/L '' etc . Went to sleep at 2000' . Woke on the descent ... '' come on boys , left a bit , runways over there '' . Or '' Call that a good landing , I could do better '' .
Old Warden evening airshow ...'' Sorry sir , you'll have to leave dog in 't car '' .
'' Fraid he flew in , in the back of that C150 '' !
'' Oooh Er ! Enjoy the show ''
rgds condor .